Home / 142,398.03-196,501.44-78,731.64

Finding the Fourth Proportional to 142,398.03, 196,501.44 and 78,731.64

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Solution

The fourth proportional to 142,398.03, 196,501.44 and 78,731.64 is: 108,645.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,398.03 : 196,501.44 = 78,731.64 : x
  2. Step 2: Convert to fraction form
    142,398.03/196,501.44 = 78,731.64/x
  3. Step 3: Cross multiply
    142,398.03x = 196,501.44 × 78,731.64
  4. Step 4: Simplify right side
    142,398.03x = 15,470,880,633.56
  5. Step 5: Solve for x
    x = 15,470,880,633.56/142,398.03
  6. Step 6: Final answer
    x = 108,645.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.